Week 9: Import, Tibbles, and Tidy Data
Official Topic
Tibbles, data import, and tidy data. Quiz 3.
Problem Focus
How do we turn a messy file into data that is ready for analysis?
Students practice importing data, checking types, identifying missing values, and reshaping data into tidy form.
In Class
- Import tabular data.
- Inspect column types.
- Identify one row per observation.
- Reshape data when variable names or values are stored in the wrong place.
AI-Aware Task
Ask an LLM to propose a tidy-data structure for a messy table. Then check whether each row, column, and cell has the intended meaning.